Frost history / Benson 6SE, AZ
Benson 6SE, AZ: frost dates by year
Last spring and first fall frost at NOAA station USC00020683, 1991 to 2025, measured from daily minimum temperatures.
Elevation 3,690 ft, 31.881, -110.240. Download the data (JSON) · NOAA daily records
Summary at 32°F
| Last spring frost | First fall frost | |
|---|---|---|
| Median | Apr 14 | Nov 1 |
| Earliest | Mar 7 (2004) | Oct 8 (2011) |
| Latest | May 1 (2010) | Nov 24 (2001) |
| Trend | 1.9 days earlier per decade | 1.1 days later per decade |
| Years with data | 24 | 25 |
At 28°F (hard freeze) the median last spring date is Mar 27 and the median first fall date is Nov 7.
The trend is a straight-line fit through the years with a freeze. A positive spring trend means the last frost now comes later. Short or patchy records give noisy trends.
Chart
Last spring frost (32°F)
First fall frost (32°F)
Dots are single years. The gray line is the median, the green line the fitted trend.
Year by year
| Year | Last spring 32°F | First fall 32°F | Last spring 28°F | First fall 28°F |
|---|---|---|---|---|
| 2025 | Apr 23 | Nov 21 | Apr 8 | Nov 21 |
| 2024 | Apr 14 | Oct 31 | Apr 8 | Nov 7 |
| 2023 | no data | Oct 31 | no data | Nov 3 |
| 2022 | Apr 18 | no data | Apr 18 | no data |
| 2021 | no data | Oct 13 | no data | Nov 5 |
| 2019 | Mar 22 | Oct 26 | Mar 17 | Oct 31 |
| 2018 | Mar 21 | Nov 8 | Mar 4 | Nov 12 |
| 2017 | Mar 8 | Nov 20 | Feb 26 | Dec 8 |
| 2016 | Apr 3 | Nov 18 | Mar 24 | Nov 23 |
| 2014 | no data | Nov 7 | no data | Nov 17 |
| 2013 | no data | Oct 31 | no data | Nov 25 |
| 2012 | Apr 15 | no data | Apr 15 | no data |
| 2011 | Apr 13 | Oct 8 | Apr 12 | Nov 7 |
| 2010 | May 1 | no data | Mar 28 | no data |
| 2008 | no data | Oct 13 | no data | Nov 6 |
| 2007 | Apr 23 | no data | Mar 29 | no data |
| 2006 | Apr 7 | no data | Mar 24 | no data |
| 2005 | Apr 11 | Nov 13 | Mar 17 | Nov 19 |
| 2004 | Mar 7 | Nov 2 | Feb 25 | Nov 2 |
| 2003 | Apr 24 | Oct 27 | Mar 30 | Nov 5 |
| 2002 | Apr 21 | Nov 5 | Mar 25 | Nov 5 |
| 2001 | Apr 23 | Nov 24 | Apr 11 | Nov 24 |
| 2000 | Apr 4 | Nov 1 | Mar 24 | Nov 8 |
| 1999 | Apr 12 | Oct 18 | Apr 11 | Nov 23 |
| 1998 | Apr 18 | Nov 4 | Apr 17 | Nov 10 |
| 1997 | Apr 25 | Oct 13 | Mar 7 | Oct 13 |
| 1996 | no data | Oct 22 | no data | Oct 22 |
| 1995 | Apr 23 | Nov 21 | Apr 11 | Nov 28 |
| 1994 | no data | Nov 5 | no data | Nov 5 |
| 1993 | Apr 9 | no data | Feb 26 | no data |
| 1992 | Mar 20 | no data | Feb 28 | no data |
| 1991 | no data | Oct 29 | no data | Oct 29 |
"none" means the station recorded no freeze at that threshold in that half of the year. "no data" means more than 10% of the season's daily readings were missing. Years with no usable data are left out. See the methodology for the rules, and the ZIP lookup for 1991–2020 frost probabilities.